Physics 9th New Book 2026 | Chapter 1 | Error & Uncertainty in Measurement | Complete Explanation

In this lecture, we discuss Uncertainty in Measurement from Physics 9th Class New Book 2026, Chapter 1. Learn why no measurement is perfectly accurate, the causes of uncertainty in measurements, uncertainty in digital instruments, and methods to reduce uncertainty using multiple readings and averaging. This topic is essential for understanding the accuracy and precision of scientific measurements. 📘 Topics Covered: ✔ What is uncertainty in measurement? ✔ Causes of uncertainty ✔ Least count and measurement limits ✔ Uncertainty in digital instruments ✔ Maximum uncertainty calculation ✔ Reducing uncertainty through averaging ✔ Role of significant figures This lecture is highly useful for class tests, board exams, and building a strong foundation in Physics.